详解ubuntu安装opencv的正确方法

sudo apt-get install cmake

sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg-dev libswscale-dev libtiff5-dev
sudo apt-get install libgtk2.0-dev
sudo apt-get install pkg-config

mkdir build

cd build

sudo cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..

sudo make -j8
可以使用sudo make -j 8 、sudo make -j4 、sudo make 
我这里就使用sudo make -j 8了

sudo make install

sudo gedit /etc/ld.so.conf

sudo gedit /etc/bash.bashrc 

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

source /etc/bash.bashrc

pkg-config opencv --modversion